Pedal exerciser



FIG. 1 is a rear perspective view of a pedal exerciser, showing my new design;

FIG. 2 is a side elevational view thereof; and,

FIG. 3 is a front perspective view.

The crank arms portion shown in broken lines are for illustrative purposes only and forms no part of the claimed design. 

The ornamental design for a pedal exerciser, as shown and described. 